diff --git a/app/services/imports/sales_logs_import_service.rb b/app/services/imports/sales_logs_import_service.rb
index 7d10f52ca..c57f2d16a 100644
--- a/app/services/imports/sales_logs_import_service.rb
+++ b/app/services/imports/sales_logs_import_service.rb
@@ -1,5 +1,7 @@
 module Imports
   class SalesLogsImportService < LogsImportService
+    include CollectionTimeHelper
+
     def initialize(storage_service, logger = Rails.logger, allow_updates: false)
       @logs_with_discrepancies = Set.new
       @logs_overridden = Set.new
@@ -124,7 +126,7 @@ module Imports
       attributes["mortgagelenderother"] = mortgage_lender_other(xml_doc, attributes)
       attributes["postcode_full"] = parse_postcode(string_or_nil(xml_doc, "Q14Postcode"))
       attributes["pcodenk"] = 0 if attributes["postcode_full"].present? # known if given
-      attributes["soctenant"] = 0 if attributes["ownershipsch"] == 1
+      attributes["soctenant"] = 0 if set_soctenant_fields?(attributes)
 
       attributes["previous_la_known"] = 1 if attributes["prevloc"].present?
       if attributes["la"].present?
@@ -584,6 +586,12 @@ module Imports
       end
     end
 
+    def set_soctenant_fields?(attributes)
+      return false if attributes["ownershipsch"] != 1
+
+      %w[socprevten frombeds fromprop].any? { |field| attributes[field].present? } || collection_start_year_for_date(attributes["saledate"]) < 2023
+    end
+
     def set_default_values(attributes)
       attributes["armedforcesspouse"] ||= 7
       attributes["hhregres"] ||= 8
@@ -600,8 +608,8 @@ module Imports
       attributes["pcodenk"] ||= 1
       attributes["prevten"] ||= 0
       attributes["extrabor"] ||= 3 if attributes["mortgageused"] == 1
-      attributes["socprevten"] ||= 10 if attributes["ownershipsch"] == 1
-      attributes["fromprop"] ||= 0 if attributes["ownershipsch"] == 1
+      attributes["socprevten"] ||= 10 if set_soctenant_fields?(attributes)
+      attributes["fromprop"] ||= 0 if set_soctenant_fields?(attributes)
       attributes["mortgagelender"] ||= 0 if attributes["mortgageused"] == 1
 
       # buyer 1 characteristics
diff --git a/spec/services/imports/sales_logs_import_service_spec.rb b/spec/services/imports/sales_logs_import_service_spec.rb
index 6d067dbd4..615201f3a 100644
--- a/spec/services/imports/sales_logs_import_service_spec.rb
+++ b/spec/services/imports/sales_logs_import_service_spec.rb
@@ -409,6 +409,42 @@ RSpec.describe Imports::SalesLogsImportService do
           sales_log = SalesLog.find_by(old_id: sales_log_id)
           expect(sales_log.proplen_asked).to eq(1)
         end
+
+        context "when setting soctenant fields" do
+          it "does not set soctenant value if none of the soctenant questions are answered" do
+            sales_log_xml.at_xpath("//xmlns:Q20Bedrooms").content = nil
+            sales_log_xml.at_xpath("//xmlns:PrevRentType").content = nil
+            sales_log_xml.at_xpath("//xmlns:Q21PropertyType").content = nil
+
+            expect(logger).not_to receive(:error)
+            expect(logger).not_to receive(:warn)
+            expect(logger).not_to receive(:info)
+            expect { sales_log_service.send(:create_log, sales_log_xml) }
+            .to change(SalesLog, :count).by(1)
+            sales_log = SalesLog.find_by(old_id: sales_log_id)
+            expect(sales_log.soctenant).to eq(nil)
+            expect(sales_log.frombeds).to eq(nil)
+            expect(sales_log.fromprop).to eq(nil)
+            expect(sales_log.socprevten).to eq(nil)
+          end
+
+          it "sets soctenant to don't know if any of the soctenant questions are answered" do
+            sales_log_xml.at_xpath("//xmlns:Q20Bedrooms").content = "2"
+            sales_log_xml.at_xpath("//xmlns:PrevRentType").content = nil
+            sales_log_xml.at_xpath("//xmlns:Q21PropertyType").content = nil
+
+            expect(logger).not_to receive(:error)
+            expect(logger).not_to receive(:warn)
+            expect(logger).not_to receive(:info)
+            expect { sales_log_service.send(:create_log, sales_log_xml) }
+            .to change(SalesLog, :count).by(1)
+            sales_log = SalesLog.find_by(old_id: sales_log_id)
+            expect(sales_log.soctenant).to eq(0)
+            expect(sales_log.frombeds).to eq(2)
+            expect(sales_log.fromprop).to eq(0)
+            expect(sales_log.socprevten).to eq(10)
+          end
+        end
       end
 
       context "with discounted sale type" do
@@ -2091,6 +2127,7 @@ RSpec.describe Imports::SalesLogsImportService do
 
           sales_log = SalesLog.find_by(old_id: sales_log_id)
           expect(sales_log&.fromprop).to be(0)
+          expect(sales_log&.soctenant).to be(0)
         end
       end
 
@@ -2107,6 +2144,7 @@ RSpec.describe Imports::SalesLogsImportService do
 
           sales_log = SalesLog.find_by(old_id: sales_log_id)
           expect(sales_log&.socprevten).to be(10)
+          expect(sales_log&.soctenant).to be(0)
         end
       end